What are the best messaging apps for Android?

Messaging apps are used for a vast array of reason, some for simple text communication while others for video conferencing for business on the go. Not all have the same functions, which can make it difficult to choose which is the best for a user's particular use case. Most devices nowadays come with some form of data messaging as well as cellular texting options though this may not be implemented in the best manner or the most intuitively, which is why many third parties have created their own answer to combining all functions or excelling in one.